Applying laser Doppler anemometry inside a Taylor-Couette geometry using a ray-tracer to correct for curvature effects

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20 Citations (Scopus)

Abstract

In the present work it will be shown how the curvature of the outer cylinder affects laser Doppler anemometry measurements inside a Taylor¿Couette apparatus. The measurement position and the measured velocity are altered by curved surfaces. Conventional methods for curvature correction are not applicable to our setup, and it will be shown how a ray-tracer can be used to solve this complication. By using a ray-tracer the focal position can be calculated, and the velocity can be corrected. The results of the ray-tracer are verified by measuring an a priori known velocity field, and after applying refractive corrections good agreement with theoretical predictions are found. The methods described in this paper are applied to measure the azimuthal velocity profiles in high Reynolds number Taylor¿Couette flow for the case of outer cylinder rotation.
Original languageEnglish
Pages (from-to)115-119
JournalEuropean journal of mechanics. B, Fluids
Volume36
DOIs
Publication statusPublished - 2012

Keywords

  • METIS-288417
  • IR-81794

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